Bob-sled



(No'ModeL) S. LEG-REID.

BOB SLED.

No. 428,845. Patented May 27,1890.

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WITNESSES.

awn 7M. BY 22 A TTOHNE rs knee, being in the construction shown proUNITED STATES I SVEN LEGREID, OF STOUGHTON, WISCONSIN.

BOB-SLED.

SPECIFICATION forming part Of Letters Application filed January 4:,1890.

Patent No. 428,845, dated May 27, 1890.

Serial No. 335,929. (no model.)

To all whom it may concern.

Be it known that LSVEN LEGREID, of Stoughton, in the county of Dane andState of Wisconsin, haveinvented a new and useful Improvement in BobSleds, of which the following is a specification.

This invention is an improvement in bobsleds, being an improvement inthe rave attachment thereof, whereby to simplify and strengthen suchrave attachment; and the invention consists in certain novelconstructions and combinations of parts, as will be hereinafterdescribed, and pointed outin the claims.

In the drawings, Figure 1 is a side View of a part of a sled providedwith my improvements. Fig. 2 shows the rave attachment in detail. Fig. 3is a section about line 3 3 of Fig. 1. Fig. 4 is a section on about line4 4 of Fig. 3, and Fig. 5 is a section on aboutline 5 5 of Fig. 2.

The runner A, knee B, rave O, and beam D are clearly shown, and may,except in the particulars hereinafter described, be of ordinaryconstruction.

The construction of the rave attachment, as before indicated, forms animportant feature of this invention. In proceeding to a description ofthe details of construction of such part it may be stated that it isquite desirable to construct such part of the lightest metal pos sibleconsistent with the requisite strength. To such end thin plate steel andiron is quite desirable; but the inability thereof to stand greatendwise strain or pressure prevents its use, except it be braced orre-enforced. By my invention I seek to so arrange or construct the raveattachment that it will have the necessary strength and enable thepractical use of metal too thin to be otherwise used for the manufactureof the rave attachment.

The rave attachment E is shown as formed with a base portion E, uprightportions E and top ears E on which ears the rave is supported andsecured. The base portion E rests upon and is adapted to the upper endof the vided centrally with a cross flute or rib e, curved upwardly, asshown, and receiving the rib or flute b on the top of the knee. The

beam D fits in the attachment E, and is preferably provided in its underside with a groove d, which partially receives and fits upon the rib e,the beam being secured by the beamclip F, which fits under the flute orrib b of the knee and its arms pass on opposite sides of the base ofattachment E through the beam and are secured. This construction permitsthe beam to oscillate as desired, and at the same time elfects a secureconnection between the knee B and the rave attachment E, such parts I3and E being formed separately, as shown and before described.

I make the knee of plate metal, iron orsteel being preferred, and moldor press it into the desired shape.

As a distinctive feature of the rave attachment, I make its uprights,also its base portion, except the central rib-like part of the latter,curvedin cross-section, such curving effecting a bracing of the metal,which greatly increases its strength and strain-resisting powers. Thisis particularly so of the uprights E of the attachment, the crosswisecurving or arching of which renders them much stronger and more able tobear endwise pressure than if they were left flat across. It will alsobe seen that the construction for securing the knee, beam, andattachment strengthens instead of weakens the knee, and is so formed asto permit the desired oscillation of the beam under the rave.

Manifestly the base portion of the attachment E can be molded or pressedto fit the upper part of sled-knees. It matters not what shape suchknees may have at the top.

It will be noticed that my rave attachment inclines outward toward itsupper end. The purpose of this construction is to support the rave outas far as practically possible, so that the end of the beam will notproject beyond the side of the rave and catch in obstructions at theside of the sled.

Having thus described myinvention, what I claim as new is 1. In a sled,a rave attachment formed from a plate of metal and having a part orparts curved in cross-section, as and for the purposes set forth.

2. In a sled, a rave attachment having its base portion adapted to theupper end of a sled-knee and having its upright portions curved orarched in cross-section, substantially as set forth.

3. In a sled, the combination of the knee,

the rave, the rave attachment, the beam supported in said attachment,and the beamelevis connecting such beam, rave attach ment, and knee,substantially as set forth.

4. In a sled, the combination of the knee having rib or flute b, therave attachment having rib or flute e fitted to rib or flute b, thebeam, and the beain-clevis, arranged and operating substantially assetforth.

5. In a sled, the combination of the rave attachment supporting the raveat its upper end and inclining outward toward such end, and the beamsupported at its end in said rave attachment, substantially as setforth.

6. The improvement in sleds, substantially SVEN LEGREID;

Witnesses:

THORVALD C. LUND, OSVVALD F. KROPP.

